Performance

React.memo is truly helpful but frequently misapplied. Here is the practical decision framework I use after profiling dozens of components.

Slow list rendering has a small number of truly common causes. Here is the diagnostic process I really use, with the specific fix for each cause.

Context is undeniably convenient but causes specific, measurable performance issues when misused. Here is what I found when profiling context-heavy applications.

Forms with many fields or complex validation can become quite sluggish. Here is what I found truly causes this and the specific fixes that helped.